尝试读取R中的csv时，最后一行不完整

I've got R v.2.15.1 running on Mac OS 10.8.2 . Earlier today, R started throwing errors at me every time I try to import ANY recently created (today) csv files. Older (before today) csv files work fine, but anything I create that's new will not read in without a warning.I've got R v.2.15.1 running on Mac OS 10.8.2 .